Rule 6 of the Fractal
FIVE WAVES UP
Corrective wave B of 3 should make a higher low in comparison to preceding corrective wave 4 down. That means that the lowest point of wave 4 down becomes the critical support for wave B of 3. If wave B of 3 violates that critical support the whole fractal gets invalidated. That means we can not longer expect a perfect completion of the fractal with the final wave C of 5 targeting a new highest high fro the whole Five Wave Up fractal.
The best way to understand how this pattern works is to study collection of charts with real life examples.